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ZValidation: add get, getOrElse, getOrElseWith #802

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merged 3 commits into from
Nov 13, 2021
Merged

ZValidation: add get, getOrElse, getOrElseWith #802

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c6c725b
ZValidation: add valueOr and value to get out a successful value
sideeffffect Nov 13, 2021
586b3a4
get and getOrElseWith
sideeffffect Nov 13, 2021
c3a5847
get, getOrElse, getOrElseWith
sideeffffect Nov 13, 2021
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23 changes: 23 additions & 0 deletions core/shared/src/main/scala/zio/prelude/ZValidation.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -108,6 +108,11 @@ sealed trait ZValidation[+W, +E, +A] { self =>
case Success(_, a) => success(a)
}

/**
* Returns the value, because no error has occurred.
*/
final def get(implicit ev: E <:< Nothing): A = self.asInstanceOf[Success[W, A]].value

/**
* Returns the value of the log.
*/
Expand All @@ -117,6 +122,24 @@ sealed trait ZValidation[+W, +E, +A] { self =>
case Success(w, _) => w
}

/**
* Returns the value, if successful, or the provided `fallback` value.
*/
final def getOrElse[A1 >: A](fallback: => A1): A1 =
self match {
case Failure(_, _) => fallback
case Success(_, a) => a
}

/**
* Returns the successful value or handles the errors that have accumulated.
*/
final def getOrElseWith[A1 >: A](f: NonEmptyChunk[E] => A1): A1 =
self match {
case Failure(_, e) => f(e)
case Success(_, a) => a
}

/**
* Writes an entry to the log.
*/
Expand Down